/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.accumulo.core.util.format;

import java.util.Map.Entry;

import org.apache.accumulo.core.data.Key;
import org.apache.accumulo.core.data.Value;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class FormatterFactory {
  private static final Logger log = LoggerFactory.getLogger(FormatterFactory.class);

  public static Formatter getFormatter(Class<? extends Formatter> formatterClass,
      Iterable<Entry<Key,Value>> scanner, FormatterConfig config) {
    Formatter formatter = null;
    try {
      formatter = formatterClass.getDeclaredConstructor().newInstance();
    } catch (Exception e) {
      log.warn("Unable to instantiate formatter. Using default formatter.", e);
      formatter = new DefaultFormatter();
    }
    formatter.initialize(scanner, config);
    return formatter;
  }

  public static Formatter getDefaultFormatter(Iterable<Entry<Key,Value>> scanner,
      FormatterConfig config) {
    return getFormatter(DefaultFormatter.class, scanner, config);
  }

  private FormatterFactory() {
    // prevent instantiation
  }
}
